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  #16  
Old 12-01-2005, 05:41 AM
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Matthewmongan Matthewmongan is offline
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this is very intresting. im going to read up at the local library so i know what your talking about.
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  #17  
Old 12-01-2005, 03:03 PM
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I did some minor porting today and bumped the head up to about 255cfm at .450". The pitot still isn't working and I'm not going to get crazy with it until I can see what exactly the air is doing in there. So all I have done so far is fill some of the bottom of the port, enlarge the radius on shortside turn, alittle work on the guide and cleaned the port up some. It still has a long way to go.
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  #18  
Old 12-07-2005, 07:06 PM
NeedForSpeed NeedForSpeed is offline
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Good work!

Could you map the stock port flow at various lifts and let us at what lift the stock ports have the highest flow?

Quote:
Originally Posted by VTsuby
I did some minor porting today and bumped the head up to about 255cfm at .450". The pitot still isn't working and I'm not going to get crazy with it until I can see what exactly the air is doing in there. So all I have done so far is fill some of the bottom of the port, enlarge the radius on shortside turn, alittle work on the guide and cleaned the port up some. It still has a long way to go.
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  #19  
Old 12-11-2005, 10:58 AM
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allright you guys with heads all over the place.......... would somebody please cc the head?
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  #20  
Old 12-14-2005, 09:58 AM
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About .425"
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  #21  
Old 12-14-2005, 10:28 AM
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Quote:
Originally Posted by VTsuby
About .425"
That would be a linear measurement, not a volume measurement
-Bill
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  #22  
Old 12-14-2005, 12:24 PM
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What about you Bill? You said you have a head off. Come on now.
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  #23  
Old 12-14-2005, 12:47 PM
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About 52cc chamber volume
.425" was where peak flow on the port I've been was stock
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  #24  
Old 12-14-2005, 03:29 PM
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Quote:
Originally Posted by VTsuby
About 52cc chamber volume
.425" was where peak flow on the port I've been was stock
Thanks for doing the measurment, that would make it 7:1,with the 2.2 turbo pistons.

Harvey.
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  #25  
Old 12-14-2005, 04:08 PM
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how about are we talking about?
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  #26  
Old 12-14-2005, 07:27 PM
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Quote:
Originally Posted by VTsuby
About 52cc chamber volume
.425" was where peak flow on the port I've been was stock
How close is the 52cc? + or - what. How did you do it?
Sorry about the doubts, just want to be certain.

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  #27  
Old 12-19-2005, 05:25 PM
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The measurement seems about right. I've done it myself now and came up with 51cc.
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  #28  
Old 01-25-2006, 09:09 PM
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Quote:
Originally Posted by VTsuby
About 52cc chamber volume
.425" was where peak flow on the port I've been was stock
Can you make a table showing flow vs intake valve lift at several values between 0.280" and 0.450"?
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  #29  
Old 01-25-2006, 09:14 PM
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Quote:
Originally Posted by VTsuby
I finally got the heads rigged up on the flow bench today. We have had issues calibrating the software for the bench but for an initial test I lifted the valves to .450" and saw 235cfm. ...
Were the springs still installed when you lifted the (intake?) valves to 0.450"?
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  #30  
Old 01-26-2006, 11:40 PM
NeedForSpeed NeedForSpeed is offline
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Thanks for the info.

Please post the peak flow and and lift of the EXHAUST port as soon as you get there. Good work!

Quote:
Originally Posted by VTsuby
About 52cc chamber volume
.425" was where peak flow on the port I've been was stock
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